Comparison of Two-Phase Porosity Models for High Capacity Random Packing

High capacity random packing is used in absorption applications where a large throughput of gas is required while simultaneously maintaining as low a pressure loss as possible. Utilising computational fluid dynamics to capture the internal flow patterns and transients when designing packed bed tower...

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Autores principales:	Poulsen Mathias, Sørensen Kim, Condra Thomas
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/0455d1d9d11e4ae1abead51f35df088e
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id	oai:doaj.org-article:0455d1d9d11e4ae1abead51f35df088e
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spelling	oai:doaj.org-article:0455d1d9d11e4ae1abead51f35df088e2021-11-12T11:44:34ZComparison of Two-Phase Porosity Models for High Capacity Random Packing2267-124210.1051/e3sconf/202132101015https://doaj.org/article/0455d1d9d11e4ae1abead51f35df088e2021-01-01T00:00:00Zhttps://www.e3s-conferences.org/articles/e3sconf/pdf/2021/97/e3sconf_icchmt2021_01015.pdfhttps://doaj.org/toc/2267-1242High capacity random packing is used in absorption applications where a large throughput of gas is required while simultaneously maintaining as low a pressure loss as possible. Utilising computational fluid dynamics to capture the internal flow patterns and transients when designing packed bed towers can be advantageous in respect to expected performance and cost optimisation. However, capturing the direct interaction between gas, liquid and packing is not computationally feasible and therefore the packed bed is modelled as a porous media. In this work four different porosity model are calibrated with idealised equations to data for the high capacity packing IMTP or I-Ring. The different models are evaluated based on their ability to predict pressure loss and liquid holdup in the packed bed. An Eulerian two-phase model with a porous zone representing the packed bed is setup in a cylindrical tower. The CFD results are compared to the predictions of the best performing porosity model. It was found that the best performing model had an absolute mean error of 6.7% when calibrated with the idealised equations. This error increased to 10.5% when the porosity model was implemented into the CFD model.Poulsen MathiasSørensen KimCondra ThomasEDP SciencesarticleEnvironmental sciencesGE1-350ENFRE3S Web of Conferences, Vol 321, p 01015 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Environmental sciences GE1-350
spellingShingle	Environmental sciences GE1-350 Poulsen Mathias Sørensen Kim Condra Thomas Comparison of Two-Phase Porosity Models for High Capacity Random Packing
description	High capacity random packing is used in absorption applications where a large throughput of gas is required while simultaneously maintaining as low a pressure loss as possible. Utilising computational fluid dynamics to capture the internal flow patterns and transients when designing packed bed towers can be advantageous in respect to expected performance and cost optimisation. However, capturing the direct interaction between gas, liquid and packing is not computationally feasible and therefore the packed bed is modelled as a porous media. In this work four different porosity model are calibrated with idealised equations to data for the high capacity packing IMTP or I-Ring. The different models are evaluated based on their ability to predict pressure loss and liquid holdup in the packed bed. An Eulerian two-phase model with a porous zone representing the packed bed is setup in a cylindrical tower. The CFD results are compared to the predictions of the best performing porosity model. It was found that the best performing model had an absolute mean error of 6.7% when calibrated with the idealised equations. This error increased to 10.5% when the porosity model was implemented into the CFD model.
format	article
author	Poulsen Mathias Sørensen Kim Condra Thomas
author_facet	Poulsen Mathias Sørensen Kim Condra Thomas
author_sort	Poulsen Mathias
title	Comparison of Two-Phase Porosity Models for High Capacity Random Packing
title_short	Comparison of Two-Phase Porosity Models for High Capacity Random Packing
title_full	Comparison of Two-Phase Porosity Models for High Capacity Random Packing
title_fullStr	Comparison of Two-Phase Porosity Models for High Capacity Random Packing
title_full_unstemmed	Comparison of Two-Phase Porosity Models for High Capacity Random Packing
title_sort	comparison of two-phase porosity models for high capacity random packing
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/0455d1d9d11e4ae1abead51f35df088e
work_keys_str_mv	AT poulsenmathias comparisonoftwophaseporositymodelsforhighcapacityrandompacking AT sørensenkim comparisonoftwophaseporositymodelsforhighcapacityrandompacking AT condrathomas comparisonoftwophaseporositymodelsforhighcapacityrandompacking
_version_	1718430536571027456

Comparison of Two-Phase Porosity Models for High Capacity Random Packing

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